NIE 1/15/13 Demand, supply – surface water

1 15 13 Demand supply drop in bucket needs protection

Satellite pictures of the Earth at night clearly demonstrate that people congregate and live where they can have access to water, especially freshwater. Freshwater makes up only about three percent of all the Earth’s water and it may surprise you even more to know how little of this supply is actually freshwater that can be seen. Surface water is literally a drop in the bucket. A mere 0.29 percent of the Earth’s  total freshwater supply is found in lakes and swamps. And streams of all sizes, from large rivers to small creeks, hold only about 0.006 percent. But the importance of understanding these streams, ponds, lakes and wetlands is huge. This water that has sustained life for millions of years is in jeopardy.

 

 

 

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